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    In vitro Engineered DNA-binding Molecule-mediated Chromatin Immunoprecipitation (in vitro enChIP) Using CRISPR Ribonucleoproteins in Combination with Next-generation Sequencing (in vitro enChIP-Seq) for the Identification of Chromosomal Interactions
    Authors:  Toshitsugu Fujita and Hodaka Fujii, date: 11/20/2017, view: 258, Q&A: 0
    [Abstract] We have developed locus-specific chromatin immunoprecipitation (locus-specific ChIP) technologies consisting of insertional ChIP (iChIP) and engineered DNA-binding molecule-mediated ChIP (enChIP). Locus-specific ChIP is a method to isolate a genomic region of interest from cells while it also identifies what binds to this region using mass ...
    Preparation of the Partially Methylated Alditol Acetates Derived from CS Tetrasaccharides Containing Galactose for the Gas Chromatography/Mass Spectrometry Analysis
    Authors:  Kyohei Higashi and Toshihiko Toida, date: 11/05/2017, view: 269, Q&A: 0
    [Abstract] Chondroitin sulfate (CS), a member of the glycosaminoglycan (GAG) family of carbohydrates, is composed of linear, sulfated repeating disaccharide sequences of N-acetyl-D-galactosamine (GalNAc) and glucuronic acid (GlcA). Recently, a keratan sulfate (KS) disaccharide [GlcNAc6S(β1-3)Galactose(β1-]-branched CS-E was identified ...
    Uptake Assays in Xenopus laevis Oocytes Using Liquid Chromatography-mass Spectrometry to Detect Transport Activity
    [Abstract] Xenopus laevis oocytes are a widely used model system for characterization of heterologously expressed secondary active transporters. Historically, researchers have relied on detecting transport activity by measuring accumulation of radiolabeled substrates by scintillation counting or of fluorescently labelled substrates by ...
    Isolation of Keratan Sulfate Disaccharide-branched Chondroitin Sulfate E from Mactra chinensis
    Authors:  Kyohei Higashi and Toshihiko Toida, date: 08/05/2017, view: 733, Q&A: 0
    [Abstract] Glycosaminoglycans (GAGs) including chondroitin sulfate (CS), dermatan sulfate (DS), heparin (HP), heparan sulfate (HS) and keratan sulfate (KS) are linear, sulfated repeating disaccharide sequences containing hexosamine and uronic acid (or galactose in the case of KS). Recently, a keratan sulfate (KS) disaccharide [GlcNAc6S ...
    Spinal Cord Preparation from Adult Red-eared Turtles for Electrophysiological Recordings during Motor Activity
    Authors:  Peter C Petersen and Rune W Berg , date: 07/05/2017, view: 1237, Q&A: 0
    [Abstract] Although it is known that the generation of movements is performed to a large extent in neuronal circuits located in the spinal cord, the involved mechanisms are still unclear. The turtle as a model system for investigating spinal motor activity has advantages, which far exceeds those of model systems using other animals. The high resistance to ...
    Expression and Analysis of Flow-regulated Ion Channels in Xenopus Oocytes
    Authors:  Shujie Shi and Marcelo D. Carattino, date: 04/20/2017, view: 1415, Q&A: 0
    [Abstract] Mechanically-gated ion channels play key roles in mechanotransduction, a process that translates physical forces into biological signals. Epithelial and endothelial cells are exposed to laminar shear stress (LSS), a tangential force exerted by flowing fluids against the wall of vessels and epithelia. The protocol outlined herein has been used to ...
    Two-electrode Voltage-clamp Recordings in Xenopus laevis Oocytes:Reconstitution of Abscisic Acid Activation of SLAC1 Anion Channel via PYL9 ABA Receptor
    Authors:  Cun Wang, Jingbo Zhang and Julian I. Schroeder, date: 01/20/2017, view: 2034, Q&A: 0
    [Abstract] Two-Electrode Voltage-Clamp (TEVC) recording in Xenopus laevis oocytes provides a powerful method to investigate the functions and regulation of ion channel proteins. This approach provides a well-known tool to characterize ion channels or transporters expressed in Xenopus laevis oocytes. The plasma membrane of the oocyte is ...
    In vitro Histone H3 Cleavage Assay for Yeast and Chicken Liver H3 Protease
    Authors:  Sakshi Chauhan, Gajendra Kumar Azad and Raghuvir Singh Tomar, date: 01/05/2017, view: 2208, Q&A: 0
    [Abstract] Histone proteins are subjected to a wide array of reversible and irreversible post-translational modifications (PTMs) (Bannister and Kouzarides, 2011; Azad and Tomar, 2014). The PTMs on histones are known to regulate chromatin structure and function. Histones are irreversibly modified by proteolytic clipping of their tail domains. The proteolytic ...
    Identification of Methylated Deoxyadenosines in Genomic DNA by dA6m DNA Immunoprecipitation
    [Abstract] dA6m DNA immunoprecipitation followed by deep sequencing (DIP-Seq) is a key tool in identifying and studying the genome-wide distribution of N6-methyldeoxyadenosine (dA6m). The precise function of this novel DNA modification remains to be fully elucidated, but it is known to be absent from transcriptional start ...
    The Chick Embryo Chorioallantoic Membrane as an in vivo Model to Study Metastasis
    Authors:  Piero Crespo and Berta Casar, date: 10/20/2016, view: 3647, Q&A: 0
    [Abstract] Metastasis is a complex process that includes several steps: neoplastic progression, angiogenesis, cell migration and invasion, intravasation into nearby blood vessels, survival in the circulatory system, extravasation followed by homing into distant tissues, the formation of micrometastases, and finally the growth into macroscopic secondary ...